辛鱼藤乳油防治梨木虱药效试验梨木虱是危害梨树叶片的一种主要害虫，严重时常造成叶片早期大量脱落，因其虫体分泌一种粘液，给药剂防治造成了很大困难。因此，近几年人们防治此虫多用高毒高残留农药，并加大浓度，虽能控制其危害，但农药残留量高，给果品销售造成了很大... Effect of Xinye Ectone on Prevention and Control of Pestalotiopsis Pests Psyllid pests are one of the major pests that endanger pear leaves. In the severe, pest often leaves a large amount of peeled off in the early stage. It is difficult for the pest to secrete a mucus to prevent and control the pests. Therefore, in recent years, people control the insects with high toxicity and high residual pesticides, and increase the concentration, although can control its harm, but the high pesticide residues, resulting in sales of fruit caused a lot of ...